Stamp-mill mortar.



No. 735,874. PATENTED AUG. 4, 1903. J. H. HENDY.

STAMP MILL MORTAR.

APPLICATION FILED JULY 8, 1902.

N0 MODEL. 2 SHEETS-SHEET 1.

m: NORRIS PEYERS 00,, PMQYQLWHQ, wAsumu-romu. c.

BATENTED AUG. 4, 1903.

J. H. HENDY.

STAMP MILL MORTAR.

APPLICATION FILED JULY 8, 1902.

2 SHEETS-SHEET 2 N0 MODEL.

\UNITED STATES" iatented August 4, 1963 JOHN 1-1. HENDY, OF SAN FRANCISCO, CALIFORNIA.

STAMP-MILL MORTAR.

SPECIFICATION forming part of Letters Patent No. 735,374, dated August 4, 1903.

Application filed July 8, 1902. Serial No. 114,822. (No model.)

My invention relates to improvements in mortars for stamp-mills.

It consists of singleindependent sectional mortars for each individual stamp, said mortars being arranged side by side upon a soleplate singly or common to a series of mortars and stamps.

My invention also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a horizontal section on theline o: m, Fig. 2. Fig. 2 is a vertical section on the line y y, Fig. .1. Fig. 3 is a front view of these mortars with intervening dischargetroughs.

It is customary in the construction of mortars of stamp-mills to make each mortar of sufficient size to receive the dies for a plu-. rality of stamps, which are raised by cams mounted upon an overhead shaft and allowed to drop successively each upon its own die. Thesemortars are commonly made in a single piece and are very heavy,and itis not possible to transport them into localities where there are no roads and only rough'paths.

It is the objectof my invention to so construct the mortars thatthey may be taken to any suitable shape.

through which the pulverized material passes when it is sufticiently reduced.

I prefer to makethese discharge-openings upon all or a plurality of sides of the mortar, so that the pulverized material can be rapidly disposed of. If desired, this portion. of the mortar may be made in a single piece; but it is preferably made in sections having lugs or flanges those at the sides.

5, adapted to receive bolts, by which the four sides are secured together into a single structwo.

The base 7 has upwardly-extending sides 8, to which the lower edges of the mortar sides are connected or otherwise secured. The central portion of this base may be open, and a center piece 9 is adapted to fit in this open space, forming the bottom of the mortar, and upon this central piece the die is carried, and the ore being fed into the mortar in any usual or suitable manner the single stampacts upon it. These single mortars may then be attached to a sole plate or plates so disposed that a series of the mortars may be arranged beneath the cam-shaft by which the stamps are actuated, thus providing for a mill with any desired number of stamps.

The essence of the invention consists in constructing the mortar in separate sections, all of which are sufficiently light to be easily packed and transported.

Receiving-troughs 10 are cast upon the sides of the mortar below the screen-openings, those at the back sloping both ways to connect with The inner sides of the outer mortars of a series and both sides of the intermediate ones have no troughs or splashboards outside the screens, but discharge directly into supplemental troughs 11, which incline to the front, where the pulverized material from all the discharges is delivered.

Having thus described my invention, what Iclaim, and desire to secure by Letters Patent, is-

1. In a stampbattery, a mortar divided verticallyintoindependent sections, each section of substantially right angled form in crosssection and provided with projecting flanges; means detachably securing the sections together as a rigid whole; and anindependent and separable base. 4

2. In a stamp-battery, a mortar divided vertically into independent sections having abutting flanges; means for detachably uniting said sections as a rigid whole, said sections having screen discharge openings; a base detachably secured to the sections and having a central opening; and a die or piece fitting said opening to form a closure and bottom therefor.

3. In a stamp-battery, a series of independent mortars each adapted for a single stamp and divided vertically to form separable sections, said sections having abutting flanges; means detachably securing the sections of each mortar, said sections having screen discharge-openings; a sole-plate common to the series of mortars; a receiving-trough rigid with the sides of the mortar below the screenopenings; the inner sides of the outer mortars of the series and both sides of the intermediate mortars being devoid of troughs; and supplemental troughs receiving the output of said inner sides of the outer mortars and both sides of the said intermediate mortars.

4. A stain p-battery consisting of a plurality ofindependent sectional rectangular mortars,

I each divided in a central vertical plane to mental troughs located between adjacent mortars to receive discharges directly from the screens upon the inner sides.

In witness whereof I have hereunto set my hand.

' JOHN H. HENDY.

Witnesses:

S. H. NOURSE, CHAS. E. TOWNSEND. 

